> As with the previous work, the new study shows the Cepheids disproportionately lie on one side of the warped galaxy, forming an arc-shaped spread.
> The Polish team also found younger Cepheids lie nearer the centre of the Milky Way, while older Cepheids are further out. A computer simulation revealed there would need to have been star-forming events 64m, 113m and 175m years ago to produce the distribution of Cepheids seen today.
I don't get why the Cepheids are bunched. Even with the modeling video. It shows them forming in bursts, yes. And with differential rotation, they bunch on one side. But still, it shows the formation bursts mainly on one side.
> The Polish team also found younger Cepheids lie nearer the centre of the Milky Way, while older Cepheids are further out. A computer simulation revealed there would need to have been star-forming events 64m, 113m and 175m years ago to produce the distribution of Cepheids seen today.
I don't get why the Cepheids are bunched. Even with the modeling video. It shows them forming in bursts, yes. And with differential rotation, they bunch on one side. But still, it shows the formation bursts mainly on one side.
So why?